/*
 *
 * Copyright 2018 Asylo authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef ASYLO_IDENTITY_NULL_IDENTITY_NULL_IDENTITY_EXPECTATION_MATCHER_H_
#define ASYLO_IDENTITY_NULL_IDENTITY_NULL_IDENTITY_EXPECTATION_MATCHER_H_

#include "asylo/identity/identity.pb.h"
#include "asylo/identity/named_identity_expectation_matcher.h"

namespace asylo {

// NullIdentityExpectationMatcher matches null identity with null-identity
// expectation.
class NullIdentityExpectationMatcher final
    : public NamedIdentityExpectationMatcher {
 public:
  NullIdentityExpectationMatcher() = default;
  ~NullIdentityExpectationMatcher() override = default;

  // From the IdentityExpectationMatcher interface.
  StatusOr<bool> Match(
      const EnclaveIdentity &identity,
      const EnclaveIdentityExpectation &expectation) const override;

  // From the NamedIdentityExpectationmatcher interface.
  EnclaveIdentityDescription Description() const override;
};

}  // namespace asylo

#endif  // ASYLO_IDENTITY_NULL_IDENTITY_NULL_IDENTITY_EXPECTATION_MATCHER_H_
